PCRE Regular Expression Compiling Workspace Buffer Overflow Vulnerability

BID:39974

Info

PCRE Regular Expression Compiling Workspace Buffer Overflow Vulnerability

Bugtraq ID: 39974
Class: Boundary Condition Error
CVE:
Remote: Yes
Local: No
Published: May 06 2010 12:00AM
Updated: May 06 2010 12:00AM
Credit: Michael Santos
Vulnerable: PCRE PCRE 6.2
PCRE PCRE 6.1
PCRE PCRE 6.0
PCRE PCRE 5.0
+ Redhat Fedora Core4
 PCRE PCRE 4.5
+ Debian Linux 3.1 sparc
 + Debian Linux 3.1 s/390
 + Debian Linux 3.1 ppc
 + Debian Linux 3.1 mipsel
 + Debian Linux 3.1 mips
 + Debian Linux 3.1 m68k
 + Debian Linux 3.1 ia-64
 + Debian Linux 3.1 ia-32
 + Debian Linux 3.1 hppa
 + Debian Linux 3.1 arm
 + Debian Linux 3.1 amd64
 + Debian Linux 3.1 alpha
 + Debian Linux 3.1
+ Redhat Fedora Core3
 + Ubuntu Ubuntu Linux 5.0 4 powerpc
 + Ubuntu Ubuntu Linux 5.0 4 i386
 + Ubuntu Ubuntu Linux 5.0 4 amd64
 + Ubuntu Ubuntu Linux 4.1 ppc
 + Ubuntu Ubuntu Linux 4.1 ia64
 + Ubuntu Ubuntu Linux 4.1 ia32
 PCRE PCRE 4.4
PCRE PCRE 3.9
PCRE PCRE 3.7
PCRE PCRE 3.4
+ Debian Linux 3.0 sparc
 + Debian Linux 3.0 s/390
 + Debian Linux 3.0 ppc
 + Debian Linux 3.0 mipsel
 + Debian Linux 3.0 mips
 + Debian Linux 3.0 m68k
 + Debian Linux 3.0 ia-64
 + Debian Linux 3.0 ia-32
 + Debian Linux 3.0 hppa
 + Debian Linux 3.0 arm
 + Debian Linux 3.0 alpha
 + Debian Linux 3.0
PCRE PCRE 8.01
PCRE PCRE 7.7
PCRE PCRE 7.6
PCRE PCRE 7.5
PCRE PCRE 7.4
PCRE PCRE 7.3
PCRE PCRE 7.2
PCRE PCRE 7.1
PCRE PCRE 7.0
PCRE PCRE 6.7
Not Vulnerable: PCRE PCRE 8.02

Discussion

PCRE Regular Expression Compiling Workspace Buffer Overflow Vulnerability

PCRE is prone to a buffer-overflow vulnerability because the library fails to perform adequate boundary checks on user-supplied input.

Attackers may leverage this issue to execute arbitrary code in the context of an application using the PCRE library. Failed attacks may result in denial-of-service conditions.

Versions prior to PCRE 8.02 are vulnerable; applications which use the PCRE library may also be affected.

Exploit / POC

PCRE Regular Expression Compiling Workspace Buffer Overflow Vulnerability

The following proof of concept is available:

perl -e 'print "/","("x819, ")"x819, "/"' | pcretest

Solution / Fix

PCRE Regular Expression Compiling Workspace Buffer Overflow Vulnerability

Solution:
Updates are available. Please see the references for more information.


PCRE PCRE 7.1

PCRE PCRE 7.2

PCRE PCRE 7.4

PCRE PCRE 8.01

PCRE PCRE 7.5

PCRE PCRE 7.6

PCRE PCRE 6.7

PCRE PCRE 7.7

PCRE PCRE 7.3

PCRE PCRE 7.0

PCRE PCRE 3.4

PCRE PCRE 3.7

PCRE PCRE 3.9

PCRE PCRE 4.4

PCRE PCRE 4.5

PCRE PCRE 5.0

PCRE PCRE 6.0

PCRE PCRE 6.1

PCRE PCRE 6.2

References

PCRE Regular Expression Compiling Workspace Buffer Overflow Vulnerability

References:
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